A young terrorist kills and injures patrons of a Norfolk amusement park by placing homemade explosives on the track of one of its roller coasters. After staging a similar incident in Pittsburgh, he sends a tape to a meeting of major amusement park executives in Chicago, demanding $1 million to make him stop.

Colonel Franz Ritter, a former hero pilot now working for military intelligence, is assigned to the great Hindenburg airship as its chief of security. As he races against the clock to uncover a possible saboteur aboard the doomed zeppelin he finds that any of the passengers and crew could be the culprit.